Simrad SP270 Installation Manual

Simrad SP270
Fishery sonar

Installation manual

A L W A Y S A T T H E F O R E F R O N T O F T E C H N O L O G Y

www.simrad.com

Simrad SP270

Fishery sonar

Installation manual

851--160570 / Rev.B

Note

Simrad AS makes every effort to ensure that the information contained within this
document is correct. However, our equipment is continuously being improved and
updated, so we cannot assume liability for any errors which may occur.

Warning

The equipment to which this manual applies must only be used for the purpose for
which it was designed. Improper use or maintenance may cause damage to the
equipment or injury to personnel. The user must be familiar with the contents of the
appropriate manuals before attempting to operate or work on the equipment.

Simrad AS disclaims any responsibility for damage or injury caused by improper
installation, use or maintenance of the equipment.

Copyright

E 2004 Simrad AS

ISBN 82-8066-014-3

The information contained within this document remains the sole property of Simrad
AS. No part of this document may be copied or reproduced in any form or by any
means, and the information contained within is not to be communicated to a third party,
without the prior written consent of Simrad AS.

Support

For support on your Simrad equipment, consult your local dealer, visit
www.simrad.com, or contact us directly at [e-mail].

Simrad AS
Strandpromenaden 50
Box 111
N-3191 Horten

Telephone: [phone]
Facsimile: [phone]

M A X I M I Z I N G Y O U R P E R F O R M A N C E A T S E A

Installation manual

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Sections

1Introduction

This section gives a brief descriptionoftheSP270sonarandtheinstallation
requirements.

2 Installation procedures

Thissectionprovidesthe necessaryinformation for theinstallationandcabling
of the complete SP 270 sonar system according to Simrad’s requirements.

3 Start-up procedures

This section contains the start-up procedures to be carried out after the
installation of the SP 270 sonar.

4Drawings

This section contains the drawi ngs necessary for the installation.

5 Appendices

This section provides information for installation of optional equipment to the
sonar.

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Remarks

References

Further i nformation about the SP270 system may be found in the following manual:

• SP270 Operator manual

The reader

This Installation manual is intended for the design and installation engineers at the
shipyard performing the installation. The information is supplied as the basis for the
shipyard’s own installation drawings applicable to the vessel. On completion of the
installation, this manual must be kept on the vessel for reference purposes during
system maintenance.

Note

This manual includes sections that may be revised individually. In the event of a
revision to any part of this manual, this “Cover and Contents” section will be replaced.

Installation manual

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Document revisions

Rev Written by

Checked by Approved by

Date Sign Date Sign Date Sign

A 30.06.99 CL 30.06.99 SØJ 30.06.99 SØJ

B 30.01.04 RBr 30.01.04 EGj 30.01.04 ESB

Sect Title Revision File

0 Cover and contents B 851--160570

1 Introduction B 851--160571

2 Installation procedures B 851--160572

3

4

5

Start--up procedures

Drawings

Appendices

A

A

B

851--160573

851--164095

851--160675

Rev.A First edition.

Rev.B Re--issued. Sections 1 and 2 updated to Rev.B without any significant

changes to the product related information. Section 5 was 851--164096,
now replaced with 851--160675 (Rev.B).

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Installation manual

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High voltage safety warning

Precautionary measures

The voltages used to power this equipment
are potentially lethal. Even 110 volts can kill.
Whenever possible, the following
precautionary measures must be taken before
any work is carried out inside the equipment:

S Switch off all high-voltage power supplies.
S Check the operation of any door interlocks

and any other safety devices.

S Completely discharge all high-voltage

capacitors.

It should be noted that interlocks and safety
devices are normally located only at regular
access points, and high voltages may be
exposed during dismantling.

Never work alone on high-voltage
equipment!

First aid in the event of
electric shock

Normally, even a high voltage electric shock
will not kill instantly. The victim can still be
revived even when his breathing and
heart-beat have ceased.

Could YOU save someone’s life?
In the event of electric shock, the correct

actions, performed quickly may well save the
victim’s life. Make sure you know what to
do!

Immediate action

While shouting for help, remove the source of
power from the victim. Switch off the supply
if possible, or using a dry, non-conductive
material (rubber gloves, broom handle etc.) to
insulate yourself, separate the victim from the
source. If the voltage exceeds 1000 volts,
switch off the supply and be ready to catch
the victim. Take care- do not become a victim
yourself.

Commence first aid on the spot. Continue to
shout for assistance till someone arrives.

1 Lay the victim flat on his back and loosen

any tight clothing (collar, tie, belt etc.).

2 Open his mouth and check for and remove

any false teeth, chewing gum etc.

3 Check if the victim is breathing. If not,

check if his heart is beating. The pulse is
normally easily found in the main arteries
of the neck, either side of the throat, up
under the chin.

If his heart is beating but he is not breathing,
commence artificial respiration. If the
victim’s heart is not beating, commence
external cardiac massage (ECM). Continue to
shout for assistance till someone arrives.

External cardiac massage

1 Kneel beside the victim. Place the heel of

one hand in the centre of his chest, at a
position half way between the notch
between the collar-bones at the top of his
chest, and the dip i n the breast-bone at the
base of his rib cage. Place the other hand
on top of the first.

2 Keeping the arms straight and using your

entire weight, press down rapidly so that
the breast bone is depressed four- five cm,
then release the pressure. Repeat
rhythmically at a rate of one cycle per
second. This will be hard work, but keep
going. His life depends on YOU. Do not
worry about breaking his ribs - these will
heal if he survives.

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Artificial respiration

1 Kneel besides the victim’s head. Place one

hand under his neck and lift, allowing his
head to fall back. This will lift his tongue
and open the air passage in his throat.

2 Place the palm of the hand on his forehead

to maintain the ”chin-up” position.

3 Using the index finger and thumb of the

same hand, pinch the victim’s nostrils
closed. Open his mouth.

4 Take a deep breath and cover his mouth

with yours. Blow steadily into his lungs to
expand his chest. Remove your mouth
from his to allow the air t o escape from his
chest. You should be able to see his chest
deflate.

5 Repeat the ”inflation-deflation” cycle at a

rate of about 12 cycles per minute till the
victim begins to breath normally again.

Combining ECM and artificial
respiration

If you are alone, perform one cycle of
artificial respiration for every five cycles of
ECM. This will be hard work, but keep going.
His life depends on you!

If there are other people available to help, one
should perform the ECM while one performs
the artificial respiration for every five cycles
of ECM. It will be much more efficient with
two people.

Once the victim’s heart is beating and he is
breathing, roll him onto his side and support
him in that position. As consciousness returns
he may vomit, and this will allow any liquid
to drain out of his mouth.

Remove the victim to a hospital as soon as
possible, but do not interrupt the artificial
respiration and ECM cycles till his heart beat
and breathing returns.

If started quickly and performed correctly, the
resuscitation methods described will keep a
sufficient volume of oxygenated blood
flowing trough the victims body to allow full
recovery.

Proficiency in the resuscitation methods can
only be achieved trough training. All
personnel concerned should attend courses on
a regular basis. Remember, someone’s life
could depend on you.

Do you know what to do?

Introduction

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851-160571

SP270

Introduction

This section gives a brief description of the SP270 sonar
and the installation requirements.

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Document revisions

Rev Date Written by Checked by Approved by

A 30.06.99 CL SØJ SØJ

B 28.01.04 RBr EGJ ESB

Rev .A Original issue.

Rev .B Document updated for re--issue. General information updated. No specific

changes to product related text or illustrations.

About this document

The information contained in this document is subject to change without prior notice.
Simrad AS shall not be liable for errors contained herein, or for incidental or
consequential damages in connection with the furnishing, performance, or use of this
document.

© 2004 Simrad AS. All rights reserved. No part of this work covered by the copyright
hereon may be reproduced or otherwise copied without prior permission from Simrad
AS.

Simrad AS
Strandpromenaden 50
Box 111
N-3191 Horten

Telephone: [phone]
Facsimile: [phone]

M A X I M I Z I N G Y O U R P E R F O R M A N C E A T S E A

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Table of contents

Installation document 1...........................................

Overview 1....................................................

General 1................................................

Main units 1..............................................

Options 2......................................................

Installation procedures 4..........................................

Auxiliary equipment 5............................................

Supply conditions 6..............................................

Purpose 6................................................

Equipment responsibility 6..................................

Receipt, unpacking and storage 6..............................

General safety rules 7............................................

Installation requirements 8........................................

Responsibility and approval 8................................

Supply power 8...........................................

Environmental requirements 8................................

Compass deviation 8.......................................

Noise sources 8...........................................

Dry docking 9.............................................

Wiring 9.................................................

Equipment handling 10............................................

Introduction 10.............................................

Transportation 10...........................................

Initial preservation 11.......................................

Inspection and unpacking 13..................................

Storage 15.................................................

After use storage 16.........................................

Re-packing 18.............................................

ESD precautions 18.........................................

Temperature protection 19....................................

Technical specifications 20.........................................

Weights and dimensions 20...................................

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Introduction

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Installation document

This installation manual will act as an installation document for
later updating and service on the sonar, and must therefore be
stored on board the vessel into which the equipment is to be
installed.

To ensure the best possible result of the installation, it is
important that each procedure is carefully followed. Each listed
procedure comprises squares for ticking off while proceeding in
the procedure. In addition to be a sign that the procedure is
followed, this will also be a good guidance for the installer.

Note that the installer becomes fully responsible for the
equipment during the installation, and that the guarantee only is
covered when the installation is made in full accordance with
this installation manual.

Overview

General

The Simrad SP 270 Sonar system is delivered without a dome
system. The Hull Unit uses a Simrad SQ4 installation trunk. The
SP 270 can therefore easily be mounted in an old SQ4 or SR
240 trunk. Note that the trunk is not included in the standard
delivery. This trunk may be made by the shipyard, or be
delivered from Simrad as an option (see chapter 2.3 “Options”).
The optional trunk which is approved by Det norske Veritas
(DnV) also includes a blind cover and a gasket.

The drawings of the trunk and blind cover are included in
section “Drawings”.

Sonar trunk drawing no. 830--113361.....................

Blind cover drawing no. 830--113362......................

Main units

The standard SP 270 Sonar system comprises the following
main units:

Simrad SP 270 Sonar Control Unit SP2--113106...........

Simrad SP 270 Transceiver Unit SP2--113107..............

Simrad SP 270 Hull Unit SP2--113108....................

Note

The Sonar Control Unit can also be delivered without the
internal display. In such case, the electronic drawer is delivered
in a separate box with connection to an external display.

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Simrad SP 270 Control Unit without display SP2--113281..

A system diagram of the standard sonar system is shown in
figure 1.

Options

The standard SP 270 sonar is a 27 kHz version with 60° tilt.
This version has five different display modes.

The following options can be delivered to the SP 270 sonar:

• 90° tilt with 180° vertical presentation. This version has nine
different display modes.

-90° tilt KIT-113293...........................

• Triple or multiple frequency, which is specially useful to
suppress interference from other sonars:

- Triple frequency KIT-113291....................

- Multiple frequency KIT-113292..................

• Beam stabilization, where the transducer beam will be
electronically stabilized for roll and pitch.

- Beam stabilization KIT-113200..................

• The installation trunk with blind cover can be ordered as an
optional delivery.

- Installation trunk with blind cover SQ4-042508......

Introduction

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Figure 1 SP 270 sonar system

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Installation procedures

The installation of the standard SP 270 Sonar system includes
the following stages:

• Mounting the Installation Trunk

• Mounting the Hull Unit

• Mounting the Transceiver Unit

• Mounting the Sonar Control Unit

• Cabling

• Start-Up

• Final Test

Refer to the cable plan, the main interconnection diagrams and
the outline dimensions drawings of the units.

The equipment, once unpacked, must be stored inside in a room
with an atmosphere free from corrosive agents. In addition, the
equipment must be covered to protect it from dust and other
forms of contamination.

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Auxiliary equipment

The SP 270 sonar requires connection of a speed log and a
course gyro. An inaccurate log or gyro input will cause
inaccurate indication of the vessel and target movements.

Speed log

• Pulse log: 100, 200 or 400 pulses/nm.

• Serial line, standard NMEA 0183; RS232, RS422 or Current

loop.

Course gyro

• 3-phase synchro signal, 20-220V L-L, 50/60/400 Hz.
Gear ratio 1:360, 1:180, 1:90, 1:36

• 3-phase stepper signal, 20-220V L-L.
Gear ratio 1:360, 1:180, 1:90, 1:36.

• Serial line, standard NMEA 0183; RS232, RS-422 or Current
loop.

Echo sounder

In order to get a depth indication on the catch control page on
the sonar, one of the following Simrad echo sounders can be
connected:

• EQ50, EQ55, EQ100, ES60, ES380 series, ES500 (RS-232
serial line).

Trawl system

In order to get the trawl information on the sonar display, one of
the following Simrad trawl systems can be connected:

• FS 903 Trawl sonar system (RS-232 serial line)

• FS 3300 Trawl sonar (RS-232 serial line or 20 mA current

loop)

• ITI Integrated trawl instrumentation (RS-232 serial line)

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Supply conditions

Purpose

The following supply conditions are applicable to standard
Simrad SP270 deliveries and associated optional equipment.

Equipment responsibility

The shipyard performing the installation and/or dealer becomes
fully responsible for the equipment upon receipt unless
otherwise stated in the contract.

The duration of responsibility includes:

• The period of time the equipment is stored locally before
installation.

• During the entire installation process.

• While commissioning the equipment.

• The period of time between commissioning and the final

acceptance of the equipment by the end user (normally the
owner of the vessel which the equipment has been installed).

The Simrad SP270 system guarantee period (as specified in the
contract) begins when the acceptance documents have been
signed unless other arrangements have been made in the
contract.

Receipt, unpacking and storage

Upon accepting shipment of the equipment, the shipyard and/or
the dealer should ensure that the delivery is complete and
inspect each shipping container for evidence of physical
damage. If this inspection reveals any indication of crushing,
dropping, immersion in water or any other form of damage, the
recipient should request that a representative from the company
used to transport the equipment be present during unpacking.

All equipment should be inspected for physical damage, i.e.
broken controls and indicators, dents, scratches etc. during
unpacking.

If any damage to the equipment is discovered, the recipient
should notify both the transportation company and Simrad so
that Simrad can arrange for replacement or repair of the
damaged equipment.

Once unpacked, the equipment must be stored in a controlled
environment with an atmosphere free of corrosive agents,
excessive humidity or temperature extremes. The equipment
must be covered to protect it from dust and other forms of
contamination when stored.

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General safety rules

The system operates on 115 and/or 230 / 380 / 440 Vac, 50/60
Hz.

Warning This voltage can be lethal.

The following safety precautions must be followed at all times
during installation and maintenance work:

• Always switch off all power before installation or
maintenance. Use the main circuit breaker, and label the
breaker with a warning sign that informs others that
maintenance or installation work is being carried out on the
system.

• Read and understand the first aid instructions for electric
shock.

• For safety reasons during troubleshooting on the equipment
with power ON, two persons should always be present.

• Whenever maintenance is carried out, it is essential that a
first aid kit is available, and that the maintenance personnel
are familiar with the first aid instructions for electrical shock.

• The various parts of the system are heavy. Make sure that the
appropriate tools and certified lifting equipment are
available, and that the personnel are trained in installation
and maintenance work.

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Installation requirements

Responsibility and approval

The Simrad SP270’s Hull Unit sleeve has been approved by Det
Norske Veritas (DNV) Classification society.

Individual Hull Unit installations must be approved on a
case-by-case basis with regard to the vessel’s national registry
and corresponding maritime authority. The shipowner and
shipyard performing the installation are responsible for
obtaining installation approval.

Supply power

The supply voltage to the equipment is to be kept within ±10%
of the installation’s nominal voltage. Maximum transient
voltage variations on the main switchboard’s bus-bars are not to
exceed -15% to +20% of the nominal voltage (except under
fault conditions).

Simrad strongly recommends that the SP270 sonar be powered
using an Uninterruptible Power Supply (UPS). The UPS should
have the capacity to independently maintain power to the sonar
for a minimum of 10 minutes. This ensures that the system can
be switched off in a controlled manner in the event of a power
failure.

Environmental requirements

Temperature and humidity

All equipment, unless otherwise specified, must be protected
from temperature extremes and excessive humidity.

Compass deviation

Once the installation is complete, the vessel must be swung with
the sonar in both the operative and inoperative modes. The
shipowner and captain are responsible for updating the deviation
table accordingly with regard to the vessel’s national registry
and corresponding maritime authority.

Noise sources

The vessel’s hull, rudder(s) and propeller(s) should be
thoroughly inspected in dry dock prior to installation.
Roughness below the water-line deformities in the shell plating
and protruding obstacles can create underwater noise. These
sources of turbulence must be smoothed or removed as best as
possible. It is especially important that the propeller(s) is not
pitted or damaged.

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Dry docking

Make sure that ample clearance under the sonar trunk and/or
protection blister is provided when dry docking the vessel.
Avoid locating supporting blocks or structures in the vicinity of
this equipment.

Note The location of the sonar trunk and/or protection blister must be

noted on the vessel’s docking plan for future reference.

Wiring

The cable from the wheelhouse to the sonar room must be
supported and protected along its entire length using conduits
and/or cable trays. Note that the cable must not be installed in
the vicinity of high-power supplies and cables, antenna cables or
other possible sources of interferences.

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Equipment handling

Introduction

This chapter describes how to transport, pack and unpack, clean,
preserve and store electronic, electro-mechanical and
mechanical units supplied by Simrad AS.

The units may be supplied as spare parts, or as parts of a
delivery.

Transportation

General specifications

Unless otherwise stated in the accompanying documentation,
electronic, electro-mechanical and mechanical units supplied by
Simrad can be transported using all methods approved for
delicate equipment; e.g. by road, rail, air or sea. The units are to
be transported in accordance with general or specific
instructions for the appropriate unit(s), using pallets, transport
cases, or carton boxes as appropriate.

Note Special local restrictions concerning air transportation may be

applied to units containing certain types of batteries. The units
should be checked and the regulations investigated by the
packer/shipper before the unit is dispatched.

Local transportation

All local transportation must be carried out according to the
same specifications as for the initial delivery. In general, all
units must be handled with care. The carton or case containing
the equipment must be kept dry at all times, and must be
sheltered from the weather. It must not be subjected to shocks,
excessive vibration or other rough handling.

The carton or case will normally be marked with text or symbols
indicating which way up it is t o be placed. Follow any
instructions given and ensure the case is always placed with its
“top” uppermost.

The carton or case must not be used for any purpose for which it
was not intended (e.g. step, table, etc.), and in the absence of
other information, no other cartons or cases must be stacked on
top of it.

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Lifting

A heavy crate will normally be marked with its weight, and the
weights of other cartons or crates will normally be entered on
the packing list.

• Always check the weight of a crate before attempting to lift
it.

• Always use lifting apparatus that is certified for the load.

Heavy units may be equipped with lifting lugs for transportation
by crane within the workshop or installation area. Before a crane
is used, check:

• The applicable weight certificate for the crane.

• The security of the lifting lugs.

Ensure that all available lifting lugs are used. Ensure the unit
remains under control during the operation to avoid damage to
the unit, equipment or personnel.

Heavy units may be transported using a fork-lift t ruck. Special
attention must then be paid to the position of the unit’s centre of
gravity. The units must be properly secured to the truck.

Initial preservation

Introduction

When a system, a unit or a spare part has been delivered to the
customer, it may be subject to long-time storage prior to
installation and use. During this storage period, certain
specifications must be met.

The equipment must be preserved and stored in such a way that
it does not constitute any danger to health, environment or
personal injury.

Specific specifications are presented below.

→ For further information about storage, refer to page 15.
→ For further information about re-packing, refer to page 18.
→ For further information about temperature protection, refer to

page 19.

Original packing crate

1 The equipment must be stored in its original transportation

crate.

2 Ensure that the units are clearly separated in the shelves

and that each unit is easily identifiable.

3 The crate must not be used for any purpose for which it

was not intended (eg. work platform etc.).

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4 The crates must not be placed on top of each other, unless

specific markings permit this.

5 The crates must not be placed directly on a dirt floor.
6 Do not open the crate for inspection unless special

circumstances permit so.

- “Special circumstances” may be suspected damage to
the crate and its content, or inspections by civil
authorities.

- If any units are damaged, prepare an inspection report
stating the condition of the unit and actions taken.
Describe the damage and collect photographic evidence
if possible. Re-preserve the equipment.

- If the units are not damaged, check the humidity
absorbing material. If required, dry or replace the bags,
then repack the unit(s) according to the packing
instructions.

7 If the crate has been opened, make sure that is it closed

and sealed after the inspection.

- Use the original packing material as far as possible.

→ Refer to the information on page 18.

Ambient temperature and humidity

1 The storage room/area must be dry, with a non condensing

atmosphere. It must be free from corrosive agents.

2 The storage area’s mean temperature must not be lower

than -30°C, and not warmer than +70°C.

- If other limitations apply, the crates will be marked
accordingly.

Note Transducers must not be stored in temperatures below -20°C.

3 The crate must not be exposed to moisture from fluid

leakages.

4 The crate must not be exposed to direct sunlight or

excessive warmth from heaters.

Shock and vibration

1 The crate must not be subjected to excessive shock and

vibration.

ESD precautions

→ Refer to the information on page 18.

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Batteries

If the unit contains normal batteries, these may have been
disconnected/isolated before the unit was packed. These must
only be reconnected before the installation starts. Units
containing batteries are marked.

Caution Units containing lithium or alkaline batteries must be

handled separately and with care. Such units are
marked accordingly. Do not attempt to recharge such
batteries, open them or dispose of them by
incineration. Refer to the applicable product data
sheets.

Inspection and unpacking

Inspection

An inspection must be carried out immediately after the unit(s)
have arrived at their destination.

• Check all wooden or cardboard boxes, plastic bags and
pallets for physical damage. Look for signs of dropping,
immersion in water or other mishandling.

• If damage is detected externally, you will have to open the
packaging to check the contents.

- Request a representative of the carrier to be present while

the carton is opened, so any transportation damage can be
identified.

• If any units are damaged, prepare an inspection report stating
the condition of the unit and actions taken. Describe the
damage and collect photographic evidence if possible. Send
the inspection report to Simrad as soon as possible.

• If the units are not damaged, check the humidity absorbing
material. If required, dry or replace the bags, then repack the
unit(s) according to the packing instructions.

General unpacking procedure

Normal precautions for the handling, transportation and storage
of fragile electronic equipment must be undertaken.

Note If the unit is not to be prepared for immediate use, you may

consider storing it unopened in its original packing material.
However, it may be useful to open the case to check its contents
for damage and retrieve any accompanying documentation.

• Check the carton before opening it to ensure it shows no
signs of dropping, immersion in water or other mishandling.

- If the carton shows signs of such damage, refer to the

paragraph covering Inspection on receipt.

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• Place the carton on a stable work bench or on the floor with
the top of the carton uppermost.

• In the absence of other instructions, always open the top of
the carton first. The contents will normally have been
lowered into the carton from above, so this will usually be
the easiest route to follow.

- Care must be used when opening the carton to ensure the

contents are not damaged.

Caution Do not use a knife to open cardboard cartons - the

contents may lie close to the surface, and may be
damaged by the blade.

• If the carton has been closed using staples, remove the staples
from the carton as you open it. This will reduce the
possibilities of scratch injury to yourself and damage to the
contents.

• If a wooden crate has been closed using screws, always
remove them using a screw-driver. Do not attempt to prise
the lid off with a crow-bar or similar.

• Once the carton is open, carefully remove all loose packing
and insulation material. Check for manuals and other
documents that may have been added to the carton during
packing, and put these to one side. Check also for special
tools, door keys etc.

Electronic and electro-mechanical units

Caution BewareofthedangersofElectro-StaticDischarge

(ESD) both to yourself and to the equipment, when
handling electronic units and components. Refer to the
precautions starting on page 18.

Electronic and electro-mechanical units will normally be
wrapped in a clear plastic bag. Lift the unit, in its bag, out of the
carton and place it in a stable position on the floor/work bench.

Inspect the unit for damage before opening the plastic bag.

Note Cables must never be used as carrying handles or lifting points.
Note Do not break the seal to open a circuit board package before the

board is to be used. If the board package is returned to the
manufacturers with the seal broken, the contents will be
assumed to have been used and the customer will be billed
accordingly.

Assuming all is well, open the bag and remove the unit.
Open the unit and check inside. Remove any packing and

desiccant material that may be inside.

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Mechanical units

Mechanical units may be heavy. Using a suitably certified lifting
apparatus, lift the unit out of the crate and place it in a stable
position on the floor/work bench.

Inspect the unit for damage and remove any packing material
that may be inside the unit.

Transducers

Transducers may be supplied mounted to a hull unit (if any), or
packed separately. Crates are normally identified by the order
number and the serial number.

The transducer face must be protected by a rigid, padded cover
(e.g. a wooden box lined with foam rubber) all the time it is
exposed to the risk of physical damage.

Note Once the units are unpacked, great care must be taken to ensure

that transducers and cabling are not exposed to any mechanical
stress.

Re-packing

If the unit is not to be installed immediately, re-pack it in its
original packing material to prevent damage in the intervening
period.

→ Refer to the information on page 18.

Storage

Pre-installation storage

The equipment should be stored in its original transportation
crate until ready for installation. The crate must not be used for
any purpose for which it was not intended (eg. work platform
etc.).

Once unpacked, the equipment must be kept in a dry, non
condensing atmosphere, free from corrosive agents and isolated
from sources of vibration.

Note Do not break the seal to open a circuit board package before the

board is to be used. If the board package is returned to the
manufacturers with the seal broken, the contents will be
assumed to have been used and the customer will be billed
accordingly.

The unit must be installed in its intended operating position as
soon as possible after unpacking.

Simrad SP270

16

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If the unit contains normal batteries, these may have been
disconnected/isolated before the unit was packed. These must
then be reconnected during the installation procedure. Units
containing batteries are marked.

Caution Units containing lithium or alkaline batteries must be

handled separately and with care. Such units are
marked accordingly. Do not attempt to recharge such
batteries, open them or dispose of them by
incineration. Refer to the applicable product data
sheets.

After use storage

Introduction

If a unit is removed from its operating location and placed into
storage, it must be properly cleaned and prepared before
packing.

Cleaning cabinets

If the unit may have been exposed to salt atmosphere while it
was in use, it must be thoroughly cleaned both internally and
externally to prevent corrosion.

• Wipe the cabinet externally using a damp cloth and a little
detergent. Do not use excessive amounts of water as the unit
may not be water tight. On completion, dry t he unit
thoroughly.

• All surfaces must be inspected for signs of corrosion, eg.
flaking/bubbling paint, stains etc. Damaged or suspect areas
must be cleaned, prepared and preserved using the correct
preservation mediums for the unit. The mediums to be used
will usually be defined in the units’ maintenance manual.

• Open the unit, and using a vacuum cleaner, remove all dust
etc. from the unit. Great care must be taken to ensure the
circuit boards and modules are not damaged in the process.

Mechanical units

If the mechanical unit may have been exposed to a salt
atmosphere while it was in use, it must be thoroughly cleaned
both internally and externally to prevent corrosion.

• If the construction materials and type of unit permits, wash
the unit using a high-pressure hose and copious amounts of
fresh water.

Examples:

- The lower parts of hull units (outside the hull)

- Subsea units

Introduction

17

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• Ensure that all traces of mud and marine growth are removed.
Use a wooden or plastic scraper to remove persistent growth,
barnacles etc. On completion, dry the unit thoroughly.

Caution Do not use a high pressure hose in the vicinity of cables

or transducers. Do not use sharp or metal tools on a
transducer face.

• If the materials or type of unit prevents the use of a
high-pressure hose, wipe the unit using a cloth dampened
with water containing a little detergent.

Example:

- The upper parts of hull units (inside the hull)

- Hydraulic systems

• Do not use excessive amounts of water as some components
on the unit may not be water tight. Wipe off the detergent
with a damp cloth, then dry the unit t horoughly.

• All surfaces must be inspected for signs of corrosion, eg.
flaking/bubbling paint, stains etc. Damaged or suspect areas
must be cleaned, prepared and preserved using the correct
preservation mediums. The mediums to be used will
normally be defined in the unit’s maintenance manual.

Cables

Wipe clean all exposed cables, and check for damage. If a cable
shows signs of wear or ageing, contact Simrad for advice.

Internal batteries

If the unit contains batteries, these may discharge slowly during
storage. If the unit is to be stored for an extended period,
disconnect or remove all internal batteries.

A suitable piece of insulating material can be placed between
the battery and the electrical contacts to prevent electrical
discharge. The battery can then remain in the unit, reducing the
risk of it being misplaced during the storage period.

Caution Units containing lithium or alkaline batteries must be

handled separately and with care. Such units are
marked accordingly. Do not attempt to recharge such
batteries, open them or dispose of them by
incineration. Refer to the applicable product data
sheets.

Simrad SP270

18

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Dehumidifier

Place a suitably sized bag of desiccant material ( silica gel or
similar) into the unit to keep the electronic components as dry as
possible.

Coatings

Spray the unit externally with a corrosion inhibitor (e.g. a light
oil) before packing.

Re-packing

The unit should be stored and transported in its original packing
material and/or crate. In the event that this material is not
available, proceed as follows:

• Small units must be protected from damp by being placed
within a plastic bag at least 0.15 mm thick. An appropriate
quantity of desiccant material should be placed inside this
bag, and the bag sealed. The sealed unit must then be placed
in an appropriate carton or crate, and supported in the
container by appropriate shock-absorbing insulation
(polystyrene foam chips etc.).

• Large units must be placed in a suitable cardboard box or
wooden crate. The unit must be protected against physical
damage by means of shock-absorbing insulation mats. The
box must be clearly marked with its contents, and must be
stored in a dry and dust-free area.

ESD precautions

Electrostatic Discharge (ESD)

Electro-Static Discharge (ESD) is the transfer of an electrostatic
charge between two bodies at different electrostatic potentials,
caused either by direct contact or induction by an electrostatic
field.

The passing of a charge through an electronic device can cause
localised overheating, and it can also “puncture” insulating
layers within the structure of the device. This may deposit a
conductive residue of the vaporised metal on the device, and
thus create a short circuit. This may result in a catastrophic
failure, or degraded performance of the device.

ESD Protection during transport and storage

Sensitive electronic equipment must be transported and stored in
protective packing bags, boxes and cabinets. The equipment
must NOT be transported or stored close to strong electrostatic,
electro-magnetic or radioactive fields.

Introduction

19

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Unpacking and servicing ESD sensitive equipment

If it is necessary to open and touch the electronics inside the
boxes/cabinets, then the following precautions MUST be taken:

• The working area must be covered by an approved
conductive service mat that has a resistance of between 50kΩ
and2MΩ, and is connected directly to a reliable earth point
via its earthing cord.

• The service personnel involved must wear a wrist-band in
direct contact with the skin, connected to the service mat.

• Printed circuit boards and other components should be placed
on the conductive service mat during installation,
maintenance etc.

Caution If, for any reason, it is necessary to move the circuit

board or components from the conductive service mat,
they must be placed in an approved anti-static
transportation container (e.g. static shielding bag)
before transportation.

• During installation and servicing, all electrical equipment
(soldering irons, test equipment etc.) must be earthed.

Temperature protection

If the unit must be protected against extremes of temperature,
the carton/crate must be lined on all walls, base and lid with
5 cm thick polyurethane or polystyrene foam.

These units will be identified as delicate in the applicable
documentation.

The package must then be clearly marked:

Must not be transported or stored in temperatures
below -5 degrees Celsius.

Other units can normally be stored in temperatures between

-30°C and +70°C, though refer to the system’s Technical

Specifications document for details.
Transducers must not be stored in temperatures below -20°C.

Simrad SP270

20

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Technical specifications

Table 1 comprises the specifications required for the installation.
For further details, refer to the Operator Manual.

Sonar Control
Unit

Transceiver Unit Hull Unit

Voltage, nominal 115/230VAC

Single phase*

115/230 VAC
Single phase**

230/380/440 VAC
3--phase***

Voltage deviation 15% of nominal 15% of nominal 230V:15%

380/440V:
340 -- 485V

Voltage transient 20% of nominal

recovery time 3s

20% of nominal
recovery time 3s

20% of nominal
recovery time 3s

Power consump­tion

100 VA 600 VA 750 VA max.

Frequency 47 -- 63 Hz 47 -- 63 Hz 47 -- 63 Hz

Tem p .: S t ora g e

Operating

-- 4 0 t o + 7 0 °C
0to+40°C

-- 4 0 t o + 7 0 °C
0to+40°C

-- 2 0 t o + 7 0 °C
0to+40°C

Humidity 5--95% relative

non--condensing

5--95% relative
non--condensing

5--96% relative
non--condensing

Refer to the voltage, nominal line in table 1.
* Input voltage is automatically selected.
** Input voltage is selected with two switches.
*** Input voltage is selected on the motor connections

Weights and dimensions

The table below shows the weights for the different units of the
sonar, and a reference for the figures showing the outline
dimensions of the units.

Weight Dimensions

Sonar Control Unit 25 kg Seefigure2

Control Unit without display 10 kg Seefigure3

Transceiver Unit 75 kg Seefigure4

Hull Unit 530 kg Seefigure5

Trunk (optional) 68 kg Seefigure6

Introduction

21

851-160571 / B

Figure 2 Outline dimensions of the Sonar Control Unit

Simrad SP270

22

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420

96.5

44

7.5

80

1

5

o

113

340

314.5

(CD4579)

Figure 3 Outline dimensions of the Control Unit without display

Introduction

23

851-160571 / B

Figure 4 Outline dimensions of the Transceiver Unit

Simrad SP270

24

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Figure 5 Outline dimensions of the Hull Unit

Introduction

25

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Figure 6 Outline dimensions of the optional trunk

Simrad SP270

26

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Blank page

Installation procedures

I

851-160572 / B

851-160572

SP270

Installation procedures

This section provides the necessary information for the
installation and cabling of the complete SP270 sonar
system according to Simrad’s requirements.

Simrad SP270

II

851-160572 / B

Document revisions

Rev Date Written by Checked by Approved by

A 30.06.99 CL SØJ SØJ

B 30.01.04 RBr EGJ ESB

Rev .A Original issue.

Rev .B Document re--issued. No changes to product specific text. The same

illustrations are used, but some of them have been slightly modified.

About this document

The information contained in this document is subject to change without prior notice.
Simrad AS shall not be liable for errors contained herein, or for incidental or
consequential damages in connection with the furnishing, performance, or use of this
document.

© 2004 Simrad AS. All rights reserved. No part of this work covered by the copyright
hereon may be reproduced or otherwise copied without prior permission from Simrad
AS.

Simrad AS
Strandpromenaden 50
Box 111
N-3191 Horten

Telephone: [phone]
Facsimile: [phone]

M A X I M I Z I N G Y O U R P E R F O R M A N C E A T S E A

Installation procedures

III

851-160572 / B

Table of contents

Installation planning 1............................................

General 1................................................

Location of the hull unit 1...................................

Sonar room requirements 2..................................

Installation of the sonar trunk 5.....................................

Mounting the trunk 5.......................................

Protecting blister 6.........................................

Corrosion protection 6......................................

Trunk installation measurements 6............................

Installation of the hull unit 9.......................................

Mounting the hull unit 9....................................

Air bleeding 9.............................................

Staying 10.................................................

Alignment of the transducer 10................................

Installation checklist 11......................................

Installation of the Transceiver Unit 12................................

Installation of the Sonar Control Unit 16..............................

Location of the Sonar Control Unit 16..........................

Mounting of the Sonar Control Unit 17..........................

Cabling 20......................................................

Cable plan 20..............................................

Sonar Control Unit cabling 22.................................

Transceiver Unit cabling 23...................................

Hull Unit cabling 26.........................................

Connecting auxiliary equipment 27..................................

General 27................................................

Connecting the course gyro 27.................................

Connecting the speed log 37..................................

Connecting other auxiliary equipment 40........................

Remounting the electronic drawer unit 40........................

Simrad SP270

IV

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Blank page

Installation procedures

1

851-160572 / B

Installation planning

Note For installation in an already installed trunk system, first read

through chapter “Sonar room requirements”. Then for an
already installed SQ4 or SR 240 trunk system, continue to
procedure “Installation of the Hull Unit“.

General

This chapter provides the necessary information for the ship
designer to plan and carry out the installation of the SP270 hull
system according to Simrad’s requirements. Study this chapter
thoroughly to achieve the recommended knowledge of the
procedures.

Note that individual installation drawings must be designed by
the shipyard, and the construction must be approved by the
classification authorities at the customer’s expense.

Simrad offers free advice for installation planning. The proposal
for the arrangement may be sent to Simrad for comments, or
may be worked out by Simrad. If such assistance is required, the
following drawings should be submitted:

• General arrangement

• Body plan and drawings of bottom tanks and cofferdam

• Sheer drawing

Location of the hull unit

The Hull Unit should preferably be located within 1/10 to 1/3 of
the ship’s length between perpendiculars (LBP), measured from
the fore perpendicular (FP). Refer to figure 1. Larger deviations
from this rule should not be made without consulting Simrad.

The Hull Unit may be located symmetrically on the centre line
of the vessel, or alongside the keel. When determining the exact
location, make sure that the transducer will have free view under
the keel (refer to figure 2 on page 3).

The Hull Unit trunk must be installed such that it will be vertical
under normal operating conditions.

Water inlets and protruding details which create turbulence,
should not be located in front of the transducer. For the same
reason, check that the shell plating in front of the trunk is not
damaged.

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Welding marks
for docking

Wa terlin e at norm al trim

LBP

(CD1881 WMF/GIF)

1/3 to 1/10

LBP

90°

Figure 1 Location of the hull unit

Sonar room requirements

The sonar room should be dimensioned to house the Hull Unit
and the Transceiver Unit. This because the length of the
flexi-hose protected cabling from the Hull Unit to the
Transceiver Unit is limited to approximately 4 meters.

By installing the units in a well designed sonar room, the risk of
corrosion is reduced, the maintenance is simplified, and the
reliability is increased.

A suggested arrangement of the sonar room is shown in figure 2.
The free space should not be obstructed by girders or pipes etc.,
which might cause problems for the installation and
maintenance work.

Access hatches

The sonar room must be accessible under all conditions, and the
doors or hatches should be so designed that t he installed units
can be removed without being disassembled. A tackle carrier
designed for a load of a minimum of 2 tons should be mounted
above the Hull Unit. The tackle may be used to facilitate the
mounting of the trunk and Hull Unit, and is also intended for use
in future service of the Hull Unit.

Heating

The sonar room should be furnished with a heating element of
1000 W, mounted close to the floor.

Installation procedures

3

851-160572 / B

Dia. 508

M

ax. 1200 757

Max. 990

Min. 810

2080

Min. 3000

(+ lifting device)

Heater

Transceiver
unit

Lighting

Load capacity:
Min. 2 tonnes

Air bleeding pipe
Min. Di.=10mm

Air vent pipes
Dia. min.50

Min. 4000

25

All dimensions are in millimeters

Pipes
10mm

Min. 500

520

Min. 150

Transducer cable
Total length: 4 meters

Hatch

Min. 585

Min. 1300

Min. 350

Removable supports

1000 (Recommended)

(CD3411 WMF/GIF)

Figure 2 Example of sonar room

arrangement, seen from the bow

Insulation

The bulkhead must be insulated and plated down to the floor.
The insulation should equal a minimum of 50 mm of rock-wool.

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Ventilation

The sonar room should preferably be connected to the ship’s
ventilation system. If this is not possible, two 3-inch vent pipes
must be laid from the sonar room to free air on deck. The air
inlet should be close to the floor, while the outlet should be
placed as high as possible. Funnels should be m ounted below
the vent pipes to collect condensed water.

To ensure the best possible ventilation, the outlet pipe should
run at least 4 meters higher than the inlet pipe. To keep rain and
water splash out, the pipes should be fitted with goosenecks or
cowls.

Cable pipes

If the cable between the wheelhouse and the sonar room passes
through hatches or places where it can be damaged, it should be
run through pipes (2” pipes are recommended).

Air vent pipe

An air vent pipe with a minimum of 10 mm internal diameter
must be fitted to the air bleeding cock on the Hull Unit. The
pipe should be laid with continuous rise to free air on deck or
out through the ship s side.

Bilge pump

The sonar room should be connected to the ship’s main bilge
pump system. If this is not possible, a separate bilge pump for
the sonar room must be installed.

Lighting

To simplify the installation and future maintenance, the sonar
room should be equipped with suitable lighting.

Docking

Make sure that there is ample space below the keel for mounting
the hull system, when docking the vessel.

To facilitate future docking, mark the position of the trunk as
indicated in figure 1.

Flooring

When the installation is completed, the sonar room should be
suitably floored.

Installation procedures

5

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Installation of the sonar trunk

Mounting the trunk

The location of the sonar trunk has to be carefully selected, as
described in chapter Location of the hull unit.. Refer also to
figures 4 and 5.

Note the orientation of the centre line of the trunk with regard to
the mounting bolts, shown in figure 3.

Note Remove the gasket on the top flange during the welding.

Parallel to
centre line

(CD1 883 WMF/GIF)

∝±

°

1

∝

Figure 3 Orientation of the sonar trunk

The height from the top of the trunk flange to the underside of
the protection blister must be minimum 920 mm (36 1/4”) as
shown in figures 4 and 5.

The top flange must be parallel to the construction loadline in
the fore-and-aft as well as the athwartships direction.

The installation trunk must be welded to an inserted plate which
should be 1.5 times as thick as the original shell plate. The size
may be determined by the shipyard or the responsible maritime
authorities. The trunk must be stiffened to the inserted plate by
welding knee-plates on the trunk in both fore-and-aft and
athwartships directions.

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Protecting blister

As illustrated in figures 4 and 5, a steel blister must be fitted for
protection. The blister shown in figure 4 is welded to the shell
plating and then filled with oil to prevent corrosion. This
method provides excellent protection and simplifies
maintenance. The blister shown in figure 5 is of the open type,
to be welded to the shell plating.

Corrosion protection

As soon as the trunk is mounted, and welding and grinding are
finished, the trunk should be painted with a quality protective
paint.

Trunk installation measurements

For future use, the measurements of the distance A, and the
heights B and C shown in figures 4 and 5 have to be carried out
and put into the table below.

mm inches

Distance A

Height B

Height C

Height D

In case of an other installation solution, make a scheme with
dimensions below.

Installation procedures

7

851-160572 / B

2.5-3xE

B

D

A

Fore-and-aft view

Thickness of plates

Knee-plates: 3/8" (10 mm)
Blister and deflection
bracket: 1/4" (6 mm)

The circular opening of the
blister should have a
diameter equal to the inside
diameter of the trunk.

Deflection-brackets should
be welded only to the
shell-plating.

3-4 knee-plates, must be

welded to frames or floors

Plug for filling of oil

Bottom view

A:
B:
C:
D:
E:

As short as possible
Max. 35 7/8" (910 mm)
Min. 1 9/16" (40 mm)
Min. 31 7/8" (810 mm)
Min. 22" (560 mm)

Side view

(CD1890)

C

E

Figure 4 Installation of trunk with extension and oil-filled blister

Simrad SP270

8

851-160572 / B

(CD1884)

2.5 - 3xE

B

D

A

Fore-and-aft view

Thickness of pl at es

Knee-plates: 3/8" (10 mm)
Blister and deflection
bracket: 1/4" (6 mm)

The circular opening of the
blister should have a
diameter equal to the inside
diameter of the trunk.

Deflection-brackets must
only be welded to the
shell-plating.

3-4 knee-plates, must be

welded to frames or floors

Bottom view

A:
B:
C:
D:
E:

As short as possibl e
Max. 35 7/8" (910 mm)
Min. 1 9/16" (40 mm)
Min. 31 7/8" (810 mm)
Min. 22" (560 mm)

Side view

C

E

Figure 5 Installation of the trunk with open protection blister. No

trunk extension

Installation procedures

9

851-160572 / B

Installation of the hull unit

Warning Do not remove the protecting cover from the

transducer until just before the Hull Unit is to be
lowered into the trunk.

Mounting the hull unit

The Hull Unit should normally be oriented with the
hoisting/lowering motor pointing aft (see figure 6). If this
orientation makes the motor control unit on the Hull Unit
difficult to access, the Hull Unit may be oriented in the most
suitable position.

BOW

(CD1 905 WMF/GIF)

Figure 6 Recommended orientation of the hull unit

1 Use a tackle to lower the Hull Unit with the protections

down into the sonar room. Remove the blind cover from
the trunk, and check that the gasket is not damaged. Store
the blind cover in the sonar room for possible future use.

2 Remove the transport -protection from the transducer and

lower the Hull Unit carefully down into the trunk. Tighten
the flange nuts with a torque of approximately 6 kpm.

The transducer cables and connectors must be kept dry and
handled with care to avoid mechanical damage.

Air bleeding

To avoid damage of the transducer by transmitting in air inside
the trunk, a pipe with a minimum inside diameter of 10 mm
must be fitted to the air bleeding cock, and run with continuous
rise to free air above deck or out through the ship s side. Make
sure that the air bleeding cock is opened (see figure 7).

Simrad SP270

10

851-160572 / B

Min. 10mm
internal

3/8" pipe
thread

Open position

(CD1889 WMF/GIF)

Figure 7 The air bleeding cock

Staying

The Hull Unit is constructed to be in the lower position with a
maximum speed of 15 knots. To prevent unwanted vibrations,
the Hull Unit has to be stayed off against the bulkhead. Remove
the lifting rings on the top of the gallows on the Hull Unit and
use the holes for fastening of the staying in the fore-and-aft
direction. In case of service on the Hull Unit, it should be
possible to remove the staying.

Alignment of the transducer

Note that the transducer should not be mechanically aligned
even if the Hull Unit is oriented differently from figure 6.

The transducer alignment will be carried out later by turning the
echo picture in the computer.

Installation procedures

11

851-160572 / B

Installation checklist

For the following check list, refer to the sonar room
requirements in chapter Sonar room requirements.

YES NO

Are the access hatches satisfactory?

Is the heating satisfactory?

Is the insulation satisfactory?

Is the ventilation satisfactory?

Is the staying of the Hull Unit satisfactory?

Is a bilge pump installed?

Is the lighting satisfactory?

Is the sonar room suitably floored?

Is the air vent pipe satisfactory?

If the answer to any of the questions is NO, make a note in the
installation certificate at the end of section Start-up procedure.

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12

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Installation of the Transceiver Unit

Note The Transceiver Unit must be mounted as a complete unit, i.e.

the door should not be opened until the unit is securely fastened
to the bulkhead.

Before starting the mounting of the Transceiver Unit, note that
the distance between the Hull Unit and the Transceiver Unit is
limited because of the flexible transducer cables. Also
remember to take into consideration the necessary slack for
lowering of the transducer.

Do not fasten the transducer cables into the Transceiver Unit
before mentioned later in the start-up procedure.

The Transceiver Unit cabinet requires a minimum free bulkhead
space, which is shown in figures 8 and 9.

1 Dismount the two mounting brackets which are fastened

to the shock absorbers on the Transceiver Unit. An Allen
key is located in the plastic bag which is fastened to the
upper shock absorber.

2 Weld the mounting brackets safely to the bulkhead as

shown in figures 8 and 9.

3 Use a tackle carrier to lift the Transceiver Unit in position,

and bolt it to the mounting brackets with the bolts
included in the delivery. These 8 bolts are located in the
plastic bag that was fastened to the upper shock absorber.
Remember to fasten the grounding cable from the
Transceiver Unit to the mounting bracket as shown in
figure 9.

Installation procedures

13

851-160572 / B

(CD1988A)

App. 40

150
Min.

150
Min.

Recommended 1100-1200

Min. 300

Min. 75

150

Min.

470

±10

App. 70

Figure 8 Mounting the brackets for the

Transceiver Unit - Forward view

Simrad SP270

14

851-160572 / B

A

ngle bars with threaded
holes for shock absorbers.
Bars supplied by Simrad.

680

±2

680

±5

Overhead

Deck

Bulkhead

(CD1988b)

Figure 9 Mounting the brackets for the

Transceiver Unit - Side view

Installation procedures

15

851-160572 / B

(CD3110)

Figure 10 Mounting the Transceiver Unit

Simrad SP270

16

851-160572 / B

Installation of the Sonar Control Unit

Location of the Sonar Control Unit

The Sonar Control Unit may be mounted on a desk top, in a
panel, or to the bulkhead. The necessary hardware for desk top
and panel mounting of the unit is included in the delivery. It
should be noted that the unit weighs approximately 28 kg, and
this weight must be considered when deciding how to mount it.

In order to secure the best location according to the routines on
board, the location of the Sonar Control Unit should be
thoroughly discussed with the skipper. Make sure that proper
operating and viewing height is provided.

Remember to include the ”Compass Safe Distance” when
planning the location:

• Sonar Control Unit with internal display:

- Steering compass: 1.4 m

- Standard compass: 0.9 m

• Sonar Control Unit without display:

- Steering compass: 1.1 m

- Standard compass: 0.6 m

When mounting the unit, ensure that it is located to allow easy
access to the cable connection panel at the rear of the unit.

Ensure that the installation area is dry, and free from excessive
dust and vibration.

Installation procedures

17

851-160572 / B

Mounting of the Sonar Control Unit

Desk top mounting

Refer to figure 11 for minimum space for the desk top mounting
of the cabinet.

1 Dismount the mounting bracket from the Sonar Control

Unit by unscrewing the four bolts on the front. An Allen
key is located in the spare parts box.

2 Bolt the mounting bracket securely to the desk top with

the four 10x30mm bolts which are located in the spare
parts box.

3 Mount the cabinet on the mounting bracket with the four

bolts.

Space for connectors
and cabl es

4 bolt holes, ø10.5,
spaced 200 x 300 mm

600

(CD1879)

540

200

75

30

473

85

Figure 11 Desk top mounting

Simrad SP270

18

851-160572 / B

Panel mounting

1 Dismount the mounting bracket from the Sonar Control

Unit by unscrewing the four bolts on the front. An Allen
key is located in the spare parts box.

2 Cut the panel opening to the following size:

a Width: 345 mm
b Height: 380 mm

3 Place the cabinet into the opening to mark the four

fastening holes.

4 Remove the cabinet and drill the four fastening holes in

the panel.
a Metal panel: Drill 5mm holes for threading with M6

tap, or 7mm holes if through-bolts with nuts are
preferred.

b Wooden panel: Drill 9mm holes for the four thread

inserts which are located in the spare parts box. Refer
to figure 12 for information about mounting the thread
inserts.

5 Place the cabinet into the opening and fasten it with the

four bolts.

Figure 12 Mounting the thread inserts

ø9

(CD1861)

Hold on screw with
the allen key, and
loosen the nut

Insert by using spanner
to the nut.
Observe alignment.
Insert to be 90° to panel

+0.3

- 0

Installation procedures

19

851-160572 / B

Bulkhead mounting

To obtain the best operation position of the cabinet, the cabinet
should be mounted with a tilt angle of approximately 20 . An
optional mounting bracket can be delivered from Simrad.

1 Dismount the mounting bracket from the Sonar Control

Unit by unscrewing the four bolts on the front. An Allen
key is located in the spare parts box.

2 Bolt the bulkhead mounting bracket securely to the

bulkhead.

3 Mount the cabinet on the mounting bracket with the four

bolts.

Simrad SP270

20

851-160572 / B

Cabling

Cable plan

Figure 13 shows the cable plan for the SP 270 sonar. The cable
numbers also refer to the interconnection diagram, drawing no.
824-113282. This drawing is located in section Drawings this
manual. The cable specifications are listed in the table below.

Note that cable no. 4 is delivered with a standard length of 100
meters, and has a preconnected plug in the Sonar Control Unit
(wheelhouse) end. This cable is included in the Sonar Control
Unit package.

Note that the length of the flexible transducer cable 7 is fixed to
approximately 4 meters.

Cable no Cable type Diameter

1 Screened cable, 2 x 0.5 mm2 6mm
2 RCOP5x1mm2 12 mm
3, 5 Mains cable, length 2 m 7mm
4, 6 Data cable 8 x (2 + 1) x 0.5 mm2 14 mm
7 Flexicable, 4 m fixed lenght. Mounted to the

Hull Unit

62 mm

8 RCCP/750 V 4 x 2.5 mm2 17 mm

Installation procedures

21

851-160572 / B

MAN

AUTO

TILT

MAIN SW.

ILLUM .

LOWER

HOIST

ON-OFF

DISPLAY GAIN

AUTOMAN

RANGE

TARG ET
TRACK

TRACK

AUTO

POS.

MAN

TRAIN

MAN

SEARCH

AUTO

Sonar contr ol unit

Transceiver unit

Hull unit

Speed log
Course gyro

1 15/230V AC mains

Trawl system
Echo sounder

115/230V AC
mains

(CD3417)

230/380/440V
3 phase mains

12

3

4

5

6

7

8

Figure 13 SP270 cable plan

Simrad SP270

22

851-160572 / B

Sonar Control Unit cabling

All the cables to the Sonar Control Unit are to be plug connected
to the electronic drawer unit at the rear of the cabinet (see figure

13). The numbers on the figure refer to the cable numbers on the
cable plan.

Note In order to make service on the Sonar Control Unit, the cables

must have a slack so the electronic drawer unit can have all the
cables connected while it is outside the cabinet. This could be
either by pulling it out from the front, or by reconnecting the
cables with the drawer at floor level.

3

1

2

4

115/230V AC mains

S101

Transceiver

Course gyroSpeed log

GND

N L

(CD3115)

Figure 14 Cable
connections to the Sonar
Control Unit

Note that cable no. 4 (refer to figure 13) is delivered with a
standard length of 100 meters, and has a preconnected plug in
the Sonar Control Unit (wheelhouse) end.

1 Pull cable no.4 from the wheelhouse to the sonar room.

Note that the preconnected plug should be connected to
the Sonar Control Unit in the wheelhouse. Remember to
include the slack for service purpose.

2 The mains power cable (3) may be connected to a normal

mains outlet in the wheelhouse. If the delivered cable does
not fit, put on a suitable connector. Note that the mains
power to the Sonar Control Unit can be 115 VAC or 230
VAC, and that this unit will automatically sense the
voltage.

Installation procedures

23

851-160572 / B

The connection of the speed log (1) and the course gyro (2) will
be described in chapter Connecting auxiliary equipment.

Transceiver Unit cabling

The cable numbers on figure 14 and in the following
procedures refer to the numbers on the cable plan and the
interconnection diagram.

1 All cable connections to the Transceiver Unit must have a

slack to allow the Transceiver Unit to move up to 10 cm
because of the flexible shock mounting.

2 Start the termination with cable no.6. This because this

cable is connected to the lowest row of the terminals on
E201. Use the surplus of cable no.4, or a similar type of
cable. Use the cable gland on the left hand side (refer to
figure 15) and terminate the main screen of the cable as
shown in figure 16. For termination of each cable pair
with screen, refer to the interconnection diagram. Use a
part of the enclosed cable sleeve on the screen of each
cable pair.

(CD3416)

6 4 5

L N

GND

Figure 15 The cable
connections in the bottom of
the Transceiver Unit

3 Continue with cable no. 4 through the cable gland on the

right hand side (see figure 15) and make the termination of
the main screen according to figure 16. Make the
connections to terminal E201 according to the
interconnection diagram.

Simrad SP270

24

851-160572 / B

Cable
main
screen

(CD3117 / GIF)

Figure 16 Termination of
the cable main screen

Note that the mains power connection to the Transceiver Unit
can be 115 VAC or 230 VAC. Use the following procedure for
the connection of the mains power:

1 Pull out the mains input connector P201 on the power

supply in the Transceiver Unit. For location of the
connector, refer to figure 17.

2 Set the mains voltage selector switch S201 on the Power

Supply and S203 on the HV Power Unit to correspond to
the correct mains voltage (115V or 230V), and replace the
switch lock to secure the switch in the correct position.

3 Set the service switch S202 on the Power Supply to OFF

(middle) position.

4 The mains power cable (3) may be connected to a normal

mains outlet in the sonar room. If the delivered cable
connector does not fit, put on a suitable connector.

5Donotmount the flexible transducer cables to the

Transceiver Unit.

Installation procedures

25

851-160572 / B

ANALOG

POWER
SUPPLY

SWITCHED

POWER

SUPPLY

SERVICE

OFF

NORMAL

ON/OFF

RELAY

24V

STAND

BY

CAUTION

DO NOT PULL OUT THIS UNIT
BEFORE THE METER SHOWS
ZERO ( 0 ) VOLTAGE

FOR CONTINUED PRO T ECTION
AGAINST RISK OF FIRE
REPLACE ONLY WITH SAME
TYPE AND RATING OF FUSE.

+8V
AREF

-8V
+5VA

-5VA
+5V
+12V

-12V
+24V
GND

L204

F203

L203

S202

L202

L201

+24V
REF

F201

8A

F204

8A

F202

8A

F205

8A

SLOW
BLOW

SLOW
BLOW

HIGH
MIDDLE
LOW
f (SW)

MAINS INPUT

115/23 0V AC

S203

230V AC

S201

230V A C

P201

L207

F206

L206

L205

HV-POWER UNIT 290-112751POWER SUPPLY 290-112750

1

0

0

5

0

0

1

5

0

S202

S201

P201

S203

(CD3118 WMF/GIF)

Figure 17 The power supply
and the HV Power unit

Simrad SP270

26

851-160572 / B

Hull Unit cabling

Connection of cable no.6 in the Motor Control Unit:
1 Use the cable gland on the right-hand side, and make the

termination of the main screen according t o figure 16.

2 Make a slack on the cable inside the motor control unit as

shown on figure 18, and make the connections to the
terminal E301 according to the interconnection diagram.

9

6

(CD3119)

E301

1 15

Cable
strip

Figure 18
Connections to the
Hull Unit

Connection of cable no.8 in the Motor Control Unit:
1 Use the cable gland on the left-hand side, and make the

termination of the cable screen in the cable gland.

2 Make the connections of the three-phase mains power

directly to the motor overload switch S303 according to
the interconnection diagram. The grounding wire should
be connected to the ground terminal beside the overload
switch.

Installation procedures

27

851-160572 / B

Connecting auxiliary equipment

General

It is not necessary to make the connection of the auxiliary
equipment before the start-up procedure is finished, and this
equipment may therefore be connected later. Anyhow, do not
connect the plugs for the auxiliary equipment to the Sonar
Control Unit before mentioned in a later chapter.

The SP270 sonars require connection of a speed log and a
course gyro. An inaccurate log or gyro input will cause
inaccurate indication of the vessel and target movements.

Speed log

• Pulse log: 100, 200 or 400 pulses/nm.

• Serial line, standard NMEA 0183; RS232, RS422 or Current

loop.

Course gyro

• 3-phase synchro signal, 20-220V L-L, 50/60/400Hz
Gear ratio 1:360, 1:180, 1:90, 1:36.

• 3-phase stepper signal, 20-220V L-L.
Gear ratio 1:360, 1:180, 1:90, 1:36.

• Serial line, standard NMEA 0183; RS232, RS422 or Current
loop.

Echo sounder

In order to get a depth indication on the catch control page on
the sonar, one of the following Simrad echo sounders can be
connected:

• EQ50, EQ100, ES380 Series, ES500 (RS-232 serial line).

Trawl system

In order to get the trawl information on the sonar display, one of
the following Simrad trawl systems can be connected:

• FS Trawl sonar (RS-232 serial line or 20mA current loop).

• ITI Integrated Trawl Instrumentation (RS-232 serial line).

Connecting the course gyro

The Sonar Control Unit can be connected to a course gyro with
one of the following outputs (tick off for the type which will be
connected):

• 3-phase synchro signal

• 3-phase stepper signal

• Serial line (NMEA 0183)

Simrad SP270

28

851-160572 / B

Course gyro with 3-phase synchro output

1 First, get the specifications of the gyro to fill in the

following data:

Synchro data Specifications Legal values

Output voltage 20 to 220 Vac

Frequency 50 / 60 / 400 Hz

Gear ratio 1:360 / 1:180 / 1:90 / 1:36

If it is difficult to find the specifications for the gyro, the output
voltage and frequency can be measured in the following way:

a The output voltage can be measured by an AC

voltmeter or by an oscilloscope on the reference output
R1 & R2. Note that if an oscilloscope is used, the
reference probe on the oscilloscope must not be
connected to the mains ground, and the measured peak
to peak value of the output voltage must be divided by
2√2 to get the RMS voltage.

b Fill the output voltage value into the table above.
c The frequency can be measured by an oscilloscope on

the reference output R1 & R2. Note that the reference
probe on the oscilloscope must not be connected to the
mains ground. Calculate the frequency 1/T (T is the
time for one sine wave) and fill the result into the table
above.

d If the gear ratio of the gyro output also is unknown, this

has to be tried out later when testing the readout of the
gyro on the Sonar Control Unit. In such case, set the
gear ratio to 1:360.

When connecting the gyro cable to the 15 pin D-connector, note
that each of the three phases S1, S2, S3 and the reference R1 has
three different connection pins, marked L (Low), M (Medium)
and H (High). These pins are used for different gyro output
voltage values as indicated for the connections below.

Signal phase 1: S1-L (20-70V) pin 2

S1-M(80-140V) pin 9
S1-H (150-220V) pin 1

Signal phase 2: S2-L (20-70V) pin 11

S2-M(80-140V) pin 3
S2-H (150-220V) pin 10

Signal phase 3: S3-L (20-70V) pin 5

Installation procedures

29

851-160572 / B

S3-M(80-140V) pin 12
S3-H (150-220V) pin 4

Reference 1: R1-L (20-70V) pin 14

R1-M (80-140V) pin 6
R1-H(150-220V) pin 13

Reference 2: R2 pin 8
2 Locate the 15 pin D-connector, the connector housing and

the shrink tube in the spare parts box. Refer to the output
voltage in the table for the synchro data, and make the
connections to the 15 pin D-connector with reference to
the pin-connection list above. Also refer to figure 18,
which shows the pin location of the connector seen from
the wire soldering side. The cable screen should be
connected to the connector housing.

9 10 11 12 13 14 15

FEMALE

(CD1870)

S1-M

S2-H

S2-L

S3-M

R1-H

R1-L

S1-H

S1-L

S2-M

S3-H

S3-L

R1-M

R2

1 2 3 4 5 6 7 8

Figure 19 Connections for a
gyro with synchro output

In order to read the data from the gyro, some DIL switches on
the printed circuit board in the electronic drawer unit behind the
operator panel must be selected. Use the following procedure to
set the switches:

1 Set the switch S101 at the rear panel on the Sonar Control

Unit to OFF position. For location of the switch, refer to
figure 14.

2 Disconnect all connections to the rear panel on the Sonar

Control Unit.

3 Use the 3mm Allen key which is located in the spare parts

box to unscrew the four screws on the front of the operator
panel, and pull the electronic drawer carefully out. Note
the two cables to the display on the top of the drawer unit.

Simrad SP270

30

851-160572 / B

4 Disconnect the two display cable plugs on the drawer unit,

and dismount the top cover of the drawer.

5 Locate the DIL switch S2 (refer to figure 20), and set the

switches according to table on next page.

Gyro

DILswitchS2

1 2 3 4 5 6 7 8

Synchro 1:360

50/60 Hz Off Off Off Off Off Off Off On

400 Hz Off Off Off Off Off Off Off Off

1:180

50/60 Hz Off Off Off On Off Off Off On

400 Hz Off Off Off On Off Off Off Off

1:90

50/60 Hz Off Off Off Off On Off Off On

400 Hz Off Off Off Off On Off Off Off

1:36

50/60 Hz Off Off Off On On Off Off On

400 Hz Off Off Off On On Off Off Off

6 Do not insert the electronic drawer unit until mentioned in

a later chapter.

Installation procedures

31

851-160572 / B

LK1
LK2
LK3
LK4
LK5
LK6

LK19
LK20
LK21

A B

TP6

TP5

TP4

TP3

TP2

TP1

D28

S1

S2

D27

D26

(CD1885)

Figure 20 The electronic drawer unit

Simrad SP270

32

851-160572 / B

Course gyro woth 3-phase stepper output

1 First, get the specification of the gyro to fill in the

following data:

Stepper data Specifications Legal values

Output voltage 20 to 220 Vac

Ref. polarity +REF or --REF

Gear ratio 1:360 / 1:180 / 1:90 / 1:36

If it is difficult to find the specifications for the gyro, the output
voltage and the reference polarity can be measured by a
voltmeter in the following way:

a Connect the positive probe from the voltmeter to the

stepper reference output, and the negative probe to one
of the three signal phases which have a signal output.
Note that one or two signal phases always should have
a signal output voltage.

b Fill the highest measured output voltage value into the

table above.

c When reading the signal output voltage, note the

voltage polarity. I f it is positive, the reference polarity
is positive (+ REF), and if it is negative, the reference
polarity is negative (- REF). Fill the result into the table
above.

d If the gyro output is specified to 6 step/degree, this is

equal to a gear ratio of 1:360. If the gear ratio of the
gyro output is unknown, this has to be tried out later
when testing the readout from the gyro on the Sonar
Control Unit. In such case, set t he gear ratio to 1:360.

e Note that for some stepper type gyros, the output

voltage is only half-wave rectified. This has to be
checked by an oscilloscope and ticked off below

- Full-wave rectified.

- Half-wave rectified.

When connecting the gyro cable to the 15 pin D-connector, note
that each of the three phases S1, S2, S3 has three different
connection pins, marked L (Low), M (Medium) and H (High).
These pins are used for different gyro output voltage values as
indicated for the connections below.

Installation procedures

33

851-160572 / B

Signal phase 1: S1-L (20-70V) pin 2

S1-M (80-140V) pin 9
S1-H (150-220V) pin 1

Signal phase 2: S2-L (20-70V) pin 11

S2-M (80-140V) pin 3
S2-H (150-220V) pin 10

Signal phase 3: S3-L (20-70V) pin 5

S3-M (80-140V) pin 12
S3-H (150-220V) pin 4

Reference: +/- REF pin 7

-/+ REF (see note) pin 15

Note If the output voltage is only half-wave rectified, the other

reference from the gyro which is not used for the three phases
must be connected to pin 15.

2 Locate the 15 pin D-connector, the connector housing and

the shrink tube in the spare parts box. Refer to the output
voltage which was written into the table for the stepper
data specifications, and make the connections to the
15-pin D-connector with reference to the pin-connection
list above. Also refer to figure 21 which shows the pin
location of the connector seen from the wire soldering
side. The cable screen should be connected to the
connector housing.

9 10 11 12 13 14 15

FEMALE

(CD1871)

S1-M

S2-H

S2-L S3-M

-/+ REF

S1-H

S1-L

S2-M S3-H

S3-L

+/- REF

1 2 3 4 5 6 7 8

Figure 21 Connections for a
gyro with stepper output

In order to read the data from the gyro, some DIL switches on
the printed circuit board in the electronic drawer unit behind the
operator panel must be selected. Use the following procedure to
set the switches.

Simrad SP270

34

851-160572 / B

1 Set the switch S101 at the rear panel on the Sonar Control

Unit to OFF position. For location of the switch, refer to
figure 14.

2 Disconnect all connections to the rear panel on the Sonar

Control Unit.

3 Use the 3mm Allen key to unscrew the four screws on the

front of the operator panel, and pull the electronic drawer
carefully out. Note the two cables to the display on the top
of the drawer unit.

4 Disconnect the two display cable plugs on the drawer unit,

and dismount the top cover of the drawer.

5 Locate the DIL switch S2 (refer to figure 20), and set the

switches according to the table below.

6 If the output voltage is only half-wave rectified, refer to

figure 20, and set the links LK19 LK20 and LK21 to
position A.

Gyro

DILswitchS2

1 2 3 4 5 6 7 8

Synchro 1:360

+REF On Off Off Off Off Off Off Off

-- R E F On On Off Off Off Off Off Off

1:180

+REF On Off Off On Off Off Off Off

-- R E F On On Off On Off Off Off Off

1:90

+REF On Off Off Off On Off Off Off

-- R E F On On Off Off On Off Off Off

1:36

+REF On Off Off On On Off Off Off

-- R E F On On Off On On Off Off Off

7Donotinsert the Control Unit drawer until mentioned in a

later chapter.

Course gyro with serial line output

The Sonar Control Unit can read the course gyro data (and/or
the speed log data) from a serial line with on of the following
outputs (tick off for the type which will be connected):

• RS-232 Serial line

• RS-422 Serial line

• 20 mA current loop

The format of the serial line data is standard NMEA 0183, and
the telegram can contain both the course and speed data (refer to
the telegram format in the end of this chapter).

Installation procedures

35

851-160572 / B

When connecting the 9-pin D-connector, note that each of the
three types of serial lines has different connection pins:

RS232: Serial line signal PORT B pin-2

Signal reference PORT B pin-5

RS422: RS422+ PORT B pin-1

RS422$ PORT B pin-4

20mA current loop: CLI+ PORT B pin-6

CLI- PORT B pin-9

1 Use a 9-pin D-connector, male type, for connecting the

serial line to port B on the Sonar Control Unit (this
connector is not included in the delivery). To make the
connections, refer to the pin connection list above, and
figure 22 which shows the pin location of the connector
seen from the wire soldering side. The cable screen should
be connected to the connector housing.

9 8 7 6

MALE

(CD1872)

CLI-

CLI+

RS232-

RS422-

RS232+

RS422+

5 4 3 2 1

Figure 22 Connections for a
gyro with serial line output

2 In order to read the data from the gyro, some DIL switches

and links on the printed circuit board in the electronic
drawer unit behind the operator panel must be selected.
Use the following procedure to set the switches:

3 Set the switch S101 at the rear panel on the Sonar Control

Unit to OFF position. For location of the switch, refer to
figure 14.

4 Disconnect all connections to the rear panel on the Sonar

Control Unit.

5 Use the 3 mm Allen key to unscrew the four screws on the

front of the operator panel, and pull the electronic drawer
carefully out. Note the two cables to the display on the top
of the drawer unit.

Simrad SP270

36

851-160572 / B

6 Disconnect the two display cable plugs on the drawer unit,

and dismount the top cover of the drawer.

7 Locate the DIL switch S2 (refer to figure 20), and set the

switches according to the following table.

Gyro

DILswitchS2

1 2 3 4 5 6 7 8

Serial line output Off Off Off Off Off On Off Off

8 Locate the links LK2, LK3 and LK6 on the Control Unit

Board, (see figure 20) and set the links according to the
table below.

Gyro

Link setting

LK2 LK3 LK6

RS--232 Out In Out

RS--422 Out Out In

20 mA current loop In Out Out

9Donotinsert the Control Unit drawer until mentioned in a

later chapter.

Serial line telegram format for course and speed
data

Heading, Degrees True:

$xxHDT,ggg.g,T<cr><1f>

Heading, Degrees Magnetic:

$xxHDM,ggg.g,M<cr><1f>

Actual track and ground speed:

$xxVGT,ggg.g,T,ggg.g,M,nn.n,N,kk.k,K<cr><1f>

Heading and water speed:

$xxVHW,ggg.g,T,ggg.g,M,nn.n,N,kk.k,K<cr><1f>

xx is indicator for transmitter, for instance:
HE = gyro, earth seeking
GP = Precision Global Positioning System
Heading data
ggg.g is heading in degrees.

The gyro value can have variable amounts of digits in front of
comma (max. 3), and after comma (min. 0). Comma can also be
omitted. Leading zeroes and spaces are accepted.

Installation procedures

37

851-160572 / B

In the two last telegrams, the ”True” value is used if both true
and magnetic values are transmitted.

Speed data:
nn.n is speed in Nautical miles
kk.k is speed in Kilometer per hour

The speed value should have min. 1, max. 2 digits in front of
comma, and 1 after. Leading zeroes and spaces are accepted.

Connecting the speed log

The Sonar Control Unit can be connected to a speed log with
one of the following outputs (tick off for the type which will be
connected):

• Pulse log (100, 200 or 400 pulses per nautical mile)

• Serial line (RS-232, RS-422 or 20 mA current loop)

The connection of these different speed log outputs is described
in the following chapters.

Connecting a pulse log

The Sonar Control Unit can be connected to a pulse log with one
of the following outputs (tick off for the type which will be
connected):

• 100 pulses per nautical mile

• 200 pulses per nautical mile

• 400 pulses per nautical mile

For any type of log output (relay, open collector, or
opto-coupler), the output must be free from other connections.

6 7 8 9

FEMALE

(CD1873)

1 2 3 4 5

Figure 23 Connections for a
pulse log with relay output

Figure 23 shows the connection of a pulse log with relay output.
For connection of open collector, or opto-coupler outputs, be
aware of the polarization (see figure 24).

Simrad SP270

38

851-160572 / B

1 Locate the 9-pin D-connector, the connector housing and

the shrink tube in the spare parts box, and make the
plug-connections. The cable screen should be connected to
the connector housing.

2 Locate the DIL switch S1 on the Control Unit Board (refer

to figure 20), and set the switches according to the table
below.

Gyro

DILswitchS1

1 2 3 4 5 6 7 8

100 pulse per nautical mile Off Off On Off Off Off Off Off

200 pulse per nautical mile Off Off Off On Off Off Off Off

400 pulse per nautical mile Off Off On On Off Off Off Off

3 Do not insert the Control drawer unit before mentioned in

a later chapter.

Figure 24 shows the pulse log interface circuit on the Control
Unit Board.

PULSEREF

9

6

3

1N4148

D11

(CD1875)

100k

100k

10k

100k

10k

+12V

R39

R41

4

5

IN-

IN+

12

2

3

U87

R78
1k

TP5

+12V

+5V

LM339

R42

R40

R45

PULSE+

PULSE-

Figure 24 Pulse log interface

When the system is started up, an oscilloscope can be connected
to the test point TP5 to check if the pulse log signal is coming
through the comparator U45 (TP4 is GND). If the signal is not
coming through the comparator, try to adjust t he 10-turn
potmeter R45. In case of noise problems, R45 can be adjusted
for noise limitation.

Connecting a speed log with serial line output

The Sonar Control Unit can read the speed log data (and/or the
course gyro data) from a serial line with on of the following
outputs (tick off for the type which will be connected):

Installation procedures

39

851-160572 / B

• RS-232 serial line

• RS-422 serial line

• 20 mA current loop

The format of the serial line data is standard NMEA 0183, and
the telegram can contain both the course and speed data (refer to
the telegram format previously described).

When connecting the 9-pin D-connector, note that each of the
three types of serial lines has different connection pins:

RS232: Serial line signal PORT B pin-2

Signal reference PORT B pin-5

RS422: RS422+ PORT B pin-1

RS422- PORT B pin-4

20mA current loop: CLI+ PORT B pin-6

CLI- PORT B pin-9

1 Use a 9-pin D-connector, male type, for connecting the

serial line to port B on the Sonar Control Unit (this
connector is not included in the delivery). To make the
connections, refer to the pin connection list above, and
figure 24 which shows the pin location of the connector
seen from the wire soldering side. The cable screen should
be connected to the connector housing.

9 8 7 6

MALE

(CD1872)

CLI-

CLI+

RS232-

RS422-

RS232+

RS422+

5 4 3 2 1

Figure 25 Connections for a
gyro with serial line output

2 Locate the DIL switch S1 on the Control Unit Board (refer

to figure 20), and set the switches according to the table
below.

Simrad SP270

40

851-160572 / B

Gyro

DILswitchS1

1 2 3 4 5 6 7 8

Serial line output Off Off Off On On Off Off Off

3 Locate the links LK2, LK3 and LK6 on the Control Unit

Board, (see figure 20) and set the links according to the
table below.

Gyro

Link setting

LK2 LK3 LK6

RS--232 Out In Out

RS--422 Out Out In

20 mA current loop In Out Out

4Donotinsert the Control drawer unit before mentioned in

a later chapter.

Connecting other auxiliary equipment

If any other optional equipment is to be connected (echo
sounder or trawl system), refer to the appendixes in this manual.

Remounting the electronic drawer unit

When the DIL switches and link settings for all auxiliary
equipment are correct, use the following procedure to remount
the electronic drawer unit:

1 Remount the top cover on the drawer unit.
2 Reconnect the two display cables.
3 Lock the two display cables in the cable locker, and

arrange the cables as shown in figure 25. Enter the drawer
unit carefully into the cabinet, and check the cables while
entering the drawer. Note that the two guiding pins at the
inside of the rear wall in the cabinet should enter the two
guiding holes at the rear of the drawer unit.

4 Fasten the electronic drawer unit with the four 3mm Allen

screws on the front of the operator panel.

Installation procedures

41

851-160572 / B

To display

(CD1887)

Figure 26 Mounting the electronic drawer unit

Simrad SP270

42

851-160572 / B

Blank page

Start-up procedures

160573/ABO24

Start-up procedures

This section contains the

start-up procedures to

carried out after installation of the

SP 270 sonar

160573/A

Simrad SP 270

.""

l:)o.

ument

revisons

Rev Documentation

Hardware/Software

Product/Project

Department

Design

Management

Date

Sign Date

Sign

Date

Sign

30.06.

30.06.

S0J 30.06.

S0J

(The original signatures are recorded in the company

s logistic database)

160573/A

Start-up procedures

. .

nts

.", ...

\0;:,1

PREPARING THE START-

UP..............................

1.1 Before start-up check list

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.2

Starting up the stand-by power supply

. . . . . . . . . . . . . . . . . . . . . . . . .

THE HULL UNIT

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Starting up the Hull Unit

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Adjusting the middle position switch

. . . . . . . . . . . . . . . . . . . . . . . . . . .

THE SONAR CONTROL UNIT

. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Starting up the sonar control

unit.

. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Checking the control panel

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. .

CHECKING THE HOISTINGILOWERING SYSTEM

. . . . . . .

Checking the bridge functions

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Checking the sonar room functions

. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

THE TRANSCEIVER UNIT.

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Starting up the Transceiver

Unit.

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Self-noise test. .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SYSTEM START-

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Connecting the transducer

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Preparing the system start-up.

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Starting up the transmitter

. . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . .

Actions on the sonar control unit

. . . . . . . . . . . . . . . . . . . . . . . . . . .

Actions on the Transceiver Unit

. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Alignment of the

sonar picture. .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

TESTING THE AUXILIARY

EQUIPMENT.

. . . . . . . . . . . . . . . . .

General. .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Checking the course gyro readout

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Checking the speed log readout

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Checking the echo sounder and trawl system readout

. . . . . . . . . . . .

Remounting the electronic drawer unit

. . . . . . . . . . . . . . . . . . . . . . . . .

FINAL TESTS AND

MEASUREMENTS.....................

General. .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Source level (SL) measurements

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Receiving voltage response (VR)

...............................

Noise/speed curve. .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

INSTALLATION REMARKS AND SIGNATURE.

. . . . . . . . . . . .

160573/A

III

Simrad SP 270

:;i'

ii"

,,/..

DQG;ument

history

(The information on this page is for Simrad'

s internal use)

Rev.A

Original issue.

160573/A

Start-up procedures

160573/A

PREPARI.

NG,..:tHi

TART

Before start-up

check list

Before beginning with the

start-up procedure, check the

following:

Sonar Control Unit:

Check that no connections are made to the Sonar Control

Unit.

Transceiver Unit:

Check that the ship s mains fuses to the

Transceiver Unit

are disconnected.

Check that the mains input connector

P20 1 on the

power

supply in the Transceiver Unit is disconnected.

Check that the transducer plug is not connected to the

left- hand side of the transceiver PCBs.

Hull Unit:

Check that the ship

s mains fuses to the Hull Unit are

disconnected.

Simrad SP 270

Starting,

u;p.

.the+.

stand~

by power su pply

In order to start up the sonar units

, the 24 VDC stand-by power

supply in the Transceiver Unit has to be

started up first. Refer

to figure 1 and use the

following procedure to start

up the

stand-by power supply:

Check that the mains

input connector P201 on the front

of the power

supply in the

Transceiver Unit

disconnected.

Check that the switch S202 on the front of the power

supply is set to OFF (middle) position.

Insert the mains fuses to the

Transceiver Unit on the

ship s mains switchboard.

Measure the mains voltage supplied to the Transceiver

Unit.

Write the measured voltage here...................

VAC.

Check if the voltage selector switches S201 on the power

supply and S203 on the HV power unit correspond to the

measured voltage (115V or 230V position).

Reinsert the mains input connector

P201 on the front of

the power supply.

Check that the lamps L201 and L202 on the front

of the

power supply illuminate.

Check that the small LED (Light Emitting Diode) for the

+24V stand-

by power on the

Transceiver Interface Board

(TIB) illuminates (refer to indication on

the front of the

power supply).

Now the 24 VDC stand-by power is supplied both to the Hull

Unit and to the

connector for the Sonar Control Unit.

160573/A

Start-up procedures

160573/A

SlMHAD

SlMHAD

POWER SUPPLY 290-

112750

HV-POWER UNIT 290-112751

+SV

AREF

ANALOG

so

'Po

POWER

\\\\1/1///

SUPPLY

~ ,\ /

+5VA

5VA

F203

+5V

+12V

SWITCHED

12V

(0)

POWER

+24V

SUPPLY

GND

HIGH

MIDDLE

SERVICE

LOW

OFF S202

f (SW)

NORMAL

ON/OFF

RELAY

F206

+24V

24V

REF

STAND

F201

F202

SA

~~tg~

F204

F205

SA

~~tg:

L201

MAINS INPUT

115/230V AC

CAUTION

DO NOT PULL OUT THIS UNIT
BEFORE THE METER SHOWS

ZERO ( 0 ) VOLTAGE

FOR CONTINUED PROTECTION

AGAINST RISK OF FIRE

REPLACE ONLY WITH SAME

TYPE AND RATING OF FUSE.

S201

230V AC

P201

S203

230V AC

(CD3121)

Figure

The transceiver power system

Simrad SP 270

THE HU.LL", N!"I*~"

;.. ;,"!"" !,-,,

Starting up the Hull Unit

WARNING! Before starting up the equipment on a

launched ship,

make sure

that there

is

sufficient depth for

the

transducer to be lowered. If starting up the

equipment

on board a docked ship, check both under the ship and

inside the sonar room that neither persons nor things

are in the way for the transducer or the lowering and

hoisting machinery.

Use a spanner to open the door on the motor control unit

which is mounted on the Hull Unit.

Release the motor overload switch

S301 in the motor

control unit by pressing the red button marked "

0" (see

figure 2).

Set the hoistingllowering switch

S302 in the

motor

control unit to STOP

position.

Locate the hand crank and the brake release bolt in the

motor control unit. Fasten the hand crank to the motor

shaft, mount the brake release bolt

(see figure 3) and

lower the transducer manually approximately 10

cm (4"

Remove the hand crank from the spindle

, but do not

replace it in the motor control unit!

160573/A

Start-up procedures

~:-i"" "

'::,/,.:;~.

'::M\,I

:1;!;'

:',"r"

""".'"

HOIST STOP

R~'

8303

8302

8302

HAND CRANK

8303

Hand crank

8301

K302

K301

(CD3125)

Figure The motor control unit

160573/A

Simrad SP 270

1", "' Set\tn'

fldistingllowering switch S302 to HOIST position

and check that the

hoisting contactor K301 is activated

when pressing the hand crank safety switch

S303.

Set the hoistingllowering switch

S302 to LOWER

position

, and check that the lowering contactor K302 is

activated when pressing the hand crank

safety switch

S303.

Set the hoistingllowering switch S302 to

STOP position.

Replace the hand

crank to its storage position in the

motor control unit.

Activate the hoisting

contactor K30 1 by

setting the

hoistingllowering switch S302 to HOIST position

, and

check if the contactor is deactivated when pressing the

upper limit switch S304 upwards (see

figure 3).

Activate the lowering

contactor K302 by setting the

hoistingllowering switch S302 to

LOWER position

, and

check if the contactor is deactivated when pressing the

lower limit switch S305 downwards.

Set the hoistingllowering switch S302 to

STOP position.

Reinsert the three-phase mains fuses for the Hull Unit

on the ship

s mains switchboard.

Measure the three-phase voltage on the

terminals of the

motor overload switch S301 in the motor control unit.

Write measured three-

phase voltage here:.......................

The hoist/lower motor is

preconnected for 380V/440V

three-phase. If the measured three-

phase voltage is

230v, the motor has to be reconnected. Remove the cover

for the mains connection on the motor

, and refer to figure

4 to link the

motor connections to correspond to the

measured voltage.

Adjust the release current of the motor

overload switch

S301 according to the three-

phase voltage:

230V: 3.4 A

380/440V: 2.

4 (minimum)

160573/A

Start-up procedures

Brake release

bolt

Press to release brake

Hand crank

S304

Note the groove

in the shaft for

the fastening screew

Motor

control

unit

S305

(CD3421)

Figure The Hull Unit

160573/A

Simrad SP 270

1,.;;:;u

fi'~Rem'Ov~c

t11ehand crank from its storage position.

Set the motor

overload switch to normal position by

pressing the black button marked "

Set the hoistingllowering switch S302 to LOWER.

Check the training direction of the hoistingllowering

motor by briefly pressing the hand

crank safety switch

S303.

If the transducer shaft was hoisted

, disconnect the ship

three- phase mains fuses and

change two of the

connections to the

terminals on the motor

overload switch

S301. Reinsert the three-phase mains fuses.

Set the hoistingllowering switch S302 to

STOP.

Put the the hand crank back to its storage position in the

motor control unit.

Check if there is sufficient space to lower the

transducer.

Make sure that the flexible transducer

cable is in such a

position that the

transducer can be lowered without

stretching or hard-

bending the cable.

Watch this

carefully during the next steps in ~his procedure.

Set the hoistingllowering switch S30~ to LOWER for full

lowering of

the transducer. The lowering will

automatically stop when the top of the

transducer shaft

hits the lower limit switch

S305.

Make a preliminary fastening of the flexible transducer

cable and watch the cable during the

hoisting in the next

step.

Set the

hoistingllowering switch to

HOIST for full

hoisting of the

transducer. The hoisting will stop

automatically when the top of the transducer hits the

upper limit switch

S304.

Repeat the hoistingllowering to find the best position for

a permanent fastening of the flexible

cable.

Set the hoistingllowering switch to

STOP.

160573/A

Start-up procedures

230V

380/440V

(CD3127)

Figure

Mains connection to the motor

160573/A

Simrad SP 270

Adjustingi.

the, iddle position switch

Normally, when the transducer is selected to middle position on

the Sonar Control Unit

, only one half of the transducer

face

should be outside the sonar

trunk (see figure 5). The middle

position switch

, which is a magnetic switch, must then be

adjusted according to the

trunk length:

With the Hull

Unit fully

hoisted to upper position

measure the

distance x between the bottom of the

transducer and the trunk end.

See the lower part of figure

~X= mm

Ifit is impossible to measure the

distance x, it can be

calculated

by using the total trunk height D from page 12 in section

Installation procedures

" .

Total

trunk height D =

- Distance flange/transducer bottom =

760 mm

= Distance X

Use the hoistingllowering switch in the

motor control

unit to position the transducer in the

calculated correct

position x + 240 mm (see figure 5).

Loosen the bracket for the middle

p~sition switch and

align the switch relative to the magnet as shown on figure

5. Ifneeded

, spare cable is coiled up behind the bracket.

Fasten the bracket and check that the distance

between

the magnet and the switch is approximately 5-

8 mm.

Check the passing of the middle position switch by using

the hoistingllowering switch.

Use the hoistingllowering switch to hoist the Hull Unit to

its upper position.

Release the motor overload switch S301 by pressing the

red button marked " . This to prevent

unwanted

lowering of the transducer.

160573/A